Balanced blue spectrum therapy lighting

Abstract

A balanced blue spectrum therapy lighting fixture is provided. The lighting fixture comprises a light source and a mixture of blue light and white light within the light source having a range between approximately 90% 420–490 nm blue light and approximately 10% white light to approximately 10% 420–490 nm blue light and approximately 90% white light.

1. A balanced blue spectrum therapy lighting fixture, the lighting fixture comprising:
 a light source; and 
 a mixture of blue light and white light within the light source having a range between approximately 90% 420–490 nm blue light and approximately 10% white light to approximately 10% 420–490 nm blue light and approximately 90% white light. 
 
   
   
     2. The lighting fixture of  claim 1  wherein the blue light is 50% 420–490 mn blue light and 50% white light. 
   
   
     3. The lighting fixture of  claim 1  and further comprising:
 an array of fluorescent bulbs or L.E.D.'s, the bulbs and L.E.D.'s containing blue light and white light. 
 
   
   
     4. The lighting fixture of  claim 1  and further comprising:
 a single bulb with one side emitting blue light and the other side emitting white light thereby emitting a balanced light. 
 
   
   
     5. The lighting fixture of  claim 5  wherein one half of the bulb is filled with the 420–490 nm blue phosphor and baked and the other side is filled with white phosphor and baked. 
   
   
     6. The lighting fixture of  claim 1  and further comprising:
 a switching mechanism for adjusting blue and white scotopic/photopic light levels thereby affecting melatonin levels. 
 
   
   
     7. The lighting fixture of  claim 6  wherein in the switching mechanism is selected from the group consisting of electronic, mechanical, and radio frequency activation switching. 
   
   
     8. The lighting fixture of  claim 1  and further comprising:
 at least one color sleeve positioned over a light source for providing the blue light and white light levels. 
 
   
   
     9. The lighting fixture of  claim 8  wherein the color sleeves are adjustable. 
   
   
     10. The lighting fixture of  claim 1  wherein the blue light and white light levels are incorporated into fiber optics, one fiber for blue light and one fiber for white light. 
   
   
     11. The lighting fixture of  claim 1  wherein the blue light and white light levels are combined with an after-glow phosphor undercoat. 
   
   
     12. The lighting fixture of  claim 1  wherein the lighting source contains the following scotopic phosphor blend: 
                         Approx. %   Phosphor Chemical Composition   Phosphor Peak (nm)           40   SrO(P 2 O 5 B 2 O 3 ): Eu   478     22   Y 2 O 3 : Eu   611     20   LaPO 4 : Co, Tb   544     18   Sr 2 P 2 O 7 : Eu   421      8   BaMg 2 Al 16 O 27 : Eu   450.                               
 
   
   
     13. The lighting fixture of  claim 12  wherein the scotopic phosphor blend comprises phosphors to give light primarily in the 400–620 nm range.